Engine-Codes - Generic - U1886

U1886 - Battery Energy Control Module Lost Communication With Engine Control Module

Repair Importance Level: 3/3
Repair Difficulty Level: 3/3  What is this?
Table of contents

U1886 Possible Causes

  • Faulty Engine Control Module (ECM)
  • Engine Control Module harness is open or shorted
  • Engine Control Module circuit poor electrical connection
  • Faulty Battery Energy Control Module

How is the U1886 code repair?

Start by checking the "Possible Causes" listed above. Visually inspect the related wiring harness and connectors. Check for damaged components and look for broken, bent, pushed out, or corroded connector's pins.

What is the cost to diagnose the U1886 code

Labor: 1.0

The cost to diagnose the U1886 code is 1.0 hour of labor. The auto repair's diagnosis time and labor rates vary by location, vehicle's make and model, and even your engine type. Most auto repair shops charge between $75 and $150 per hour.
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Possible Symptoms

  • Engine Light ON (or Service Engine Soon Warning Light)

U1886 Meaning

Devices connected to the serial data circuits monitor for serial data communications during normal vehicle operation. Operating information and commands are exchanged among the devices. The devices have prerecorded information about what messages are needed to be exchanged on the serial data circuits, for each virtual network. The messages are supervised and also, some periodic messages are used by the receiver device as an availability indication of the transmitter device. Each message contains the identification number of the transmitter device.
This diagnostic is used to check the loss of communication with the Engine Control Module (ECM) on a high-speed General Motor Local Area Network (GMLAN) bus. The Battery Energy Control Module supervises a periodic serial data message to check the communication status of the Engine Control Module. If this message is not received within 3 s, then this Diagnostic Trouble Code (DTC) is set.

More Information

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Information for specific makes

  • U1886 BUICK Battery Energy Control Module Lost Communication With Engine Control Module
  • U1886 CADILLAC Battery Energy Control Module Lost Communication With Engine Control Module
  • U1886 CHEVROLET Battery Energy Control Module Lost Communication With Engine Control Module
  • U1886 GMC Battery Energy Control Module Lost Communication With Engine Control Module

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